1,Material characteristics:

Lithium chloride is a white crystal with deliquescence. Salty, soluble in water, ethanolAcetonePyridine and other organic solvents, low toxicity. But has a strong irritating and corrosive effect on the eyes and mucous membranes. Lithium chloride is mainly used in the field of air conditioning, used as flux, desiccant, chemical reagent, and used in fireworks, dry batteries and lithium metal.

The industry is mainly composedlepidolite,spodumeneand extraction of NaCl, KClAfter the extraction of bittern water.

Lithium chloride is white loose powder, but the fluidity is not good. According to the different production materials and processes, the free water content before drying is about 3% ~ 5%, and the water content of the product after drying is about 0.3.

2、Special drying process:

Lithium chloride drying has the following characteristics and requirements: the material is loose, but the fluidity is not good; the temperature resistance is high; the solubility of lithium chloride in water is large, and the regular drying water is not easy to evaporate; the material is easy to scar during the drying process; the energy consumption is low, the material is heated evenly, the operating environment is good, and the index requirements are met at one time.

Hebei Yanming Chemical Equipment Co., Ltd. has successfully used energy-saving and environment-friendly disc continuous dryer as lithium chloride drying equipment according to material analysis and many years of engineering experience, and has provided drying system solutions for many manufacturers of this material.

The anhydrous lithium chloride wet product separated by centrifuge is continuously and quantitatively added into the energy-saving and environment-friendly disc dryer by the quantitative screw feeder for drying operation. The heat and mass transfer process of the material is completed in the flow process to achieve the purpose of drying. After the dry material is cooled in the dryer to reach the packaging temperature (usually at 40-60 ℃), it is discharged from the discharge port at the bottom into the packaging equipment for packaging, and the tail gas escaping from the material is discharged from the wet discharge port at the top of the dryer after dust removal.

3、Process characteristics:

Continuous operation, high thermal efficiency. Since the energy-saving and environment-friendly disc continuous dryer is dried by conduction and heat transfer, air (or a very small amount of air) is not passed into the dryer during the drying process, and its tail gas carrying capacity is very small, so its thermal efficiency can reach more than 85%;

② Less material loss and good operating environment. In the drying of lithium chloride by the energy-saving and environment-friendly disc continuous dryer, because the materials go in and out, the distribution of the materials is wet and dry, and the flow rate of the drying tail gas is extremely low (about 0.1 m/s), the material dust is difficult to float to the top of the equipment and is rarely carried away by the tail gas, which not only does not lose the materials, but also does not pollute the environment, thus meeting the requirements of environmental protection. The whole drying system is closed operation, the exhaust gas adopts a specially designed dust collector, which can recover more than 99.9% of the dust;

The adjustable equipment, material drying uniform adjustable. The effect of material drying can be conveniently adjusted by adjusting the speed of the equipment, adjusting the thickness of the material layer, the flow rate of the heat source, the temperature of the heat source, the number of rake arms, the form, size and angle of rake leaves, the amount of material added and the number of drying trays in the dryer;

④ Stable operation, long service life and simple operation;

⑤ The material flow direction is single, there is no backmixing phenomenon, the drying is uniform, the quality is stable, and there is no need to mix again;

The use of special rake leaf device, so that the material is not easy to bond on the drying tray;

⑦ Each layer of drying tray can be separately introduced into the heat medium or cold medium to heat or cool the materials, and the upper part of the drying and lower part of the cooling can also be realized in one device, and the temperature control of the materials is accurate and easy;

⑧ For the small particles in the wet material, the special crushing device is added to the appropriate position inside the dryer, so that the crushed small particles are powder, which can strengthen the heat transfer and drying process and ensure the uniformity of the dry material;

⑨ Easy installation, small footprint. The dryer is delivered as a whole and transported as a whole. It only needs to be hoisted in place, and the installation and positioning are very easy. Due to the layer-by-layer arrangement and vertical installation of the drying tray, even the drying area is large and the floor area is small.

Due to the high boiling point of water in the lithium chloride wet material (much higher than 100 degrees under normal pressure), the design uses high-temperature heat transfer oil as a heat source to ensure that the material is dried at one time in a short period of time (about 30 minutes) and reduces the investment in equipment.

The equipment uses three kinds of titanium materials, which not only ensures the corrosion resistance of the equipment to chloride ions, but also ensures the feasibility of equipment manufacturing, and reduces the investment in equipment.